Here's all statuses from my history:
1) We received your Form N-400, Application for Naturalization, and sent you a receipt notice.
2) We are actively reviewing your Form N-400, Application for Naturalization. Our records showed
nothing is outstanding at this time.
3) We scheduled an interview for your Form N-400 Application for Naturalization
4) Your Form N-400, Application for Naturalization, was placed in line for oath ceremony scheduling.
5) We recommended that your Form N-400, Application for Naturalization, be approved. Your
case was submitted for quality review.
6) We scheduled you for an oath ceremony for your
Form N-400, Application for Naturalization.
7) Certificate Of Naturalization Was Issued
Statuses 1 and 2 were updated on the day I filed.
Status 3 came few months later.
Statuses 4, 5, 6 and 7 changed on the day of my interview which was the same day when I naturalized.